Cut-out.



No. 829,043. PATENTED AUG. 21, 19,06.

' P. T. WHEELER.

CUT-OUT.

APPLICATION IILBD OCT. 22. 1904.

M mit rrrl-Rl m.. wAaHmaN 'UNTTED sTATEs PATENT OFFICE."

FRANK T. WHEELER, OF SOUTl-IINGTON, CONNECTICUT, ASSIGNOR TO. THETRUMBULL ELECTRIC MANUFACTURING COMPANY, OF PLAIN` 4VILLE, CONNECTICUT,yA CORPORATION OF CONNECTICUT.

y CUT-OUT.

it may concern,.- Beit known that I, `FRANK T. WHEELER, a

l citizen of the United States, and a resident isolated one I `having abase with recesses and abutments ofjSouthington, in the county ofHartford and State of, Connecticut, `have invented a new andusefulImprovement in Cut-Outs, of which the following is a specification.

The `invention relates to cut-outs or rosettes, as commonly called inthe art, and more particularly to such a device arranged toffbe placedagainst a ceiling and form terminal contacts for incoming wires in suchmanner that said wires will be absolutely i from the other to preventshort circuits The object "of the invention is to provide a rosettehaving a baseand cap detachably ar` ran ed with relation thereto androvided wit means for insulating th'e incoming wires or leads.

A further object is to provide a rosette in which the base and cap mustalways be secured Vto one another in a well-defined and predeterminedposition.

-A still furtherobject is to provide a rosette which will secure andseal the ends of the wirecarrying tubes commonly used to conductelectric wires tothe rosette.

Anespecial feature and object of the invention is t-o provide a base andcap each having contacts arranged to interloclcand with the partsprovided with cooperating '1 members which insure the contact of cer- 35tain ofthe base-contacts cap-contacts. i

;Referring tothe drawings, Figure 1 is a toppl`an view of the base. Fig.2 is a crosssectional viewi through the base shown in Figgl.. Fig., 3 is`a bottom planview of the base. Fig. 4 is aview in plan of the interiorof the cap.` \Fig. 5 is a crossesectional view through the capappurtenant to theinserting-lug. Fig. 6 is a view in plan at the bottomof Fig.

with certain of the IjIeretofore it has been common practice toformrosettes or ceiling cut-outs in two parts witha pair of contacts onthe base and a pair offcoperatng contacts within the cap, said' contactsarranged to interlock one with the other, and thus form the necessaryconducting means from the wires entering the base to a pendent cord orother conductingmeans Specification of Letters Patent.

Application filed October 22, 1904. Serial No. 229,620.

Patented Aug. 21, 1906.

attached to the contacts of the cap. Insuch devices it has inmanyinstances been possif ble to secure the interlocking` of thecontacts of the base and cap by a partial revolution of the cap. In suchdevices, however, sofar as known there has been nothing to preventtheinterlocking of either of the vbasecontacts with either one of thecap-contacts. In such devices, of course, the positive and .negativewires entering the base mightbe transposed with reference to thetranslator or apparatus receiving current from the cord or {corm'ecfvtion of the cap, inasmuch as the base-contacts are always relativelyfixed as to polarity, and this polarity might bevaried with reference tothe translator receiving currentfrom the cap-contacts by improperinsertionand connection of the cap-contacts with reference to thebase'when rotating the cap to engage the contacts.

It is one of the objects of the presentinvention to preclude thepossibility of such improper connection, `and when the contacts of thecap-are wired for positive and nega tive poles with reference to thepositive `and negative poles of the base the properinser.- tion ofthecap is insured and the correspond,- ing contacts of base and cap mustalwaysbe inserted in a predetermined manner.

In the accompanying drawings the` numeral l denotes the base, having inits -upper surface depressions 2 3 of a sufficient diameter to receivethe ends of wire-carrying tubes or conduits such as are commonlyused inthe electrical work. The recesses do not extend completely through thevbase, but have bottoms 4, each provided with an orifice 5 of sufficientdiameter to permit passagel of the wire borne in the conduit. On theinner surface of the base are provided contact members 6 7 each providedwith angularlydisposed ends 8, depressed from the main contact portions9 `and secured to bosses l0 in such lmannerthat the main contactportions 9 lie substantially in the sameyplane and parallel with thelower edge of the base.

Of course it is understood that the wires passing through the orifices 5are secured. to the` angularly-disposed contact portions 8, as bybinding-screws il. 1

Intermediate the contacts 6 7 .there is'a bridge-pieceA l2, whichstartsfrom the inner edge of the base, as at 13, and extends across roo hookunder and lock back of the contacts 6 Y and 7 upon partial rotation ofthe cap.

Projecting from the inner face of the cap is an inserting-lug 19 ofapproximately the.

proper size to drop between the end ofthe bridge at 15 and fill thespace between said brid e and the inner wall of the depression 14 o thebase and of such size that it will not drop between the side of thebridge, as at 20, and the adjacent edge of the contact 9. It will beseen from this arrangement that to insert the cap-contacts within thebase and turn said cap and contacts into locking position it isnecessary that the projection 19 be `inserted adjacent to the contactmember 6 and on the clear side of said contact, so that the projectionmay be turned past the end 15 of the bridge 12. Thus it is impossible toinsert the contact members of the cap except in predetermined relationto the base-contacts, and the contact member 18 must always be broughtinto engagement with the contact 6, while the contact member 17 mustalways be brought into contact with the base-contact 7. For a clearerunderstanding the contacts ofthe cap and base are each marked and Vinorder to show relative engagement of the parts. j

It is known to be old to form a base having openings through which theends of conduittubes' may project; but such devices have certainobjections, inasmuch as the ends of the tubes are open and not sealed byan insulated material. In the form of device vherein shown the recessesof the base-piece are simply depressions to receive the ends of theconduits and eectually close the rims or ends of said tubes or conduits,permitting only the wire to pass throu h the base. This construction insealed cei ing-work insures insulation between the incomin wires,conduits, and rosette without liabi ity of short circuits along theceiling.

Obviously various chan es might be made in the details of the severaparts without departing from the spirit or intent of the invention, and,if desired, more than one insertionlug may be used, and the lugs mightbe arranged in various manners so long as they insure a uniform andositive insertion ofthe cap-contacts with refldrence to thebase-contacts in a predetermined manner.

What I claim as my invention, and desire to secure by Letters Patent, isg 1. A rosette comprising a base and cap, contacts borne on said baseand cap and arranged to be interengaged and disengaged upon partialrelative rotation of the parts, a groove formed in the base and openadjacent to one of said contacts and closed appurtenant to the other ofsaid contacts of the base, and a lug projectin from the cap and adaptedto enter and foIlow the groove, whereby the contacts of the base and capwill interengage only in predetermined relation dependent upon theinsertion of the lug of the cap within the groove of the base.

2. In a rosette in combination, a base, a cap arranged to be securedthereto upon partial rotation, a groove Jformed in the base, contactsextending across said groove, a bridge extending across the grooveadjacent to one of said base-contacts, cap-contacts and a lug arrangedupon the cap and adapted to enter the groove of the base, whereby thecontacts of the cap and base maybe engaged only in predeterminedrelation.

3. In combination in a rosette, a base provided with contacts abridge-piece extending between the contacts, a depression Jformed in theupper surface of the base appurtenant to each of said contacts andarranged to receive conduit-tubes, and apertures through the bottom ofsaid depressions connecting said conduit-tube depressions with the lowerside of the base, said openings being arranged upon opposite sides ofthe bridge-piece.

4. In a rosette, in combination, a base of insulating material, contactssecured to said base, a bridge of insulating material extendingpartially across said base and intermediate the contacts, said contactshavin a portion extending along the side of the bri ge, and a secondortion extending at an angle thereto as and)for the purposes described.

5. In a rosette, in combination, a base of insulating material providedwith a depression on its inner face, contacts arranged in saiddepression, a bridge of insulating material extending intermediate saidcontacts terminating at one side in the wall of the depression and atits opposite end providin an opening between the bridge and inner wa lof the depression a cap having a lug arranged to enter said openingwhereby the contacts may be en aged in predetermined relation.

6. n combination in a rosette, a base of insulatin material, contactsmounted thereon, a bri ge of insulating material extending v betweensaid contacts and terminating at one end at a distance from the wall ofthe base, a cap provlded with contacts arran ed to interlock with thebase-contacts, and a ug projecting from the said cap-and arranged to einserted in the recess of the base at the end of the bridge.

7. In a rosette comprising a base and cap,4 from the boss acrosstheannular groove, coneacli bearing contacts arranged to interentactsarranged on opposite sides of the I5 gage upon partial relative rotationof the bridge-piece, a' cap provided With contacts base and cap, agroove formed in the base, a arranged to project into annular groove to5 bridge-piece extending across the groove apengage the base-contacts,and a lug arranged urtenant to one of the base-contacts and a upon thecap purtenant to one of its contacts,

ug arranged Aupon the cap and adapted for whereby the cap and basecontacts must be 2o insertion 1n the roove of the base, wherebyinterengaged in predetermined relation.

the contacts of t e cap and base may be eng 1o gaged only inpredetermined relation. FRANK T' WHEELER' 8. `In combination in arosette, a base hav- Witnesses: ing a central boss and annular grooveeX- S. S. WHEELER,

tending thereabout, a bridge-piece extending H. E. GWILL'IM.

